Double-walled box



R. E. SMlTH DOUBLE WALLED BOX Sept. 20, 1938;

Filed May 20, 1936 2 Sheets-Sheet l INVENTOR. f/b/iam Z. 6/77/77? WMATTORNEYS Sept. 20, 1938. R. E. SMITH DOUBLE WALLED BOX Filed May 20,1936 2 Sheets-Sheet 2 INVENTOR. lF/t/wfd Z 6/77/7/7 Patented Sept. 20,1938 greater PATENT OFFICE DOUBLE-WALLED BOX Richard E. Smith,Kalamazoo, Mich, assignor to Sutherland Paper Company, Kalamazoo, Mich.

Application May 20,

13 Claims.

The main objects of this invention are:

First, to provide a double-walled paper box or receptacle formed of anintegral blank scored for folding whichmay be shipped in the knockdownand readily set up for use.

Second, to provide a double-walled paper box in which there iscomparatively little waste in forming the blank from a sheet ofmaterial.

Third, to provide a double-walled box in which the inner and outer wallsare securely held in spaced relation and one which is quite rigid evenwhen made of relatively light stock.

Objects relating to details and economies of the invention will appearfrom the description to follow. The invention is defined and pointed outin the claims.

A structure which is a preferred embodiment of the invention isillustrated in the accompanying drawings, in which:

Fig. 1 is a perspective view of a box embodying my invention and havinga sliding or telescoping trating another step in the setting up of thebox.

Fig. 6 is an enlarged horizontal view on line 6-6 of Fig. 2.

Fig. '7 is a plan view of the blank. Reference being had to thedrawings, my improved box is preferably formed of an integral blankillustrated in Fig. 7 and comprising a bottom I, outer side walls 2, 2,and outer end walls 3, 3, joined to or extending from the side and endedges of the bottom. The blank is variously scored as indicated bydotted. lines 4 to facilitate folding. I

The outer side walls 2 have inner side wall extensions 5, 5, joinedthereto by the top spacer members 6, 6,-While the outer end walls 3, 3have inner end walls I, I joined thereto by the top spacer members 8, 8.

The inner side walls 5 have sealing flaps 9, 9 on their longitudinaledges which are provided with adhesive and lapped upon and secured tothe bottom as clearly shown in the drawings. The outer side walls haveend flap extensions l0 and H notched at l2 and I3 so that they may beset up and interlocked as clearly shown in Fig. 5. The end flaps l0 haveinturned top spacer members M. It will be noted that the end flaps I01936, Serial No. 80,724 I are diagonally opposite so that a spacermember is provided at each end of the box.

The sidewall top spacer members 6 are provided with laterally disposedinwardly projecting tongues l5 which lie in the plane of the parts [4when the box is set up, see Fig. 3.

The inner side wall members 5 have longitudinally projecting tongues [6at the ends thereof. The inner side and end walls are shorter than thecorresponding outer walls by approximately the width of the top spacermembers.

The inner end walls 1 have out-turned bottom spacer members I! on theirouter edges, these being turned outwardly to prevent the outwardcollapsing of the inner end walls or to support them in a substantiallyvertical position. The inner end walls have tongues l8 adjacent theirupper edges, these tongues being turned outwardly and engaged underthetongues l5 when the box is set up. They are also provided withrelatively short tongues or lugs [9 which snap behind or engage the endedges of the inner side walls below their tongues l6. In erectedposition, the inner end walls and their outwardly disposed spacermembers I! are disposed behind the end edges of flaps 9, the said endedges abutting the walls and serving as cleats to resist displacement ofthe end walls.

To facilitate folding the upper edges of the tongues l8 are beveled at20 so that suitable clearance is provided, permitting their engagementunder the tongues I6. v

Preferably, V-shaped notches 2| are formed in the top spacer members l6and the adjacent portion of the inner end walls, the apexes of thesenotches being in the folding line joining the inner end walls 1 to thetop spacer members 8.

It will be noted that there is relatively little waste when the blank iscut or died out from the sheet or web.

The box may be shipped in the knockdown with the securing flaps 9 gluedand readily set up by the user, the parts other than these inner sidewall securing flaps being interlocking. The box may be formed ofcomparativelylight material and when set up is very secure and rigid.

In the embodiment illustrated, I provide a telescoping cover 22 havingwindow openings 23 provided with a transparent window 24. It is obviousthat other types of covers may be employed.

I have illustrated and described my improvements in a very practicalembodiment thereof. I have not attempted to illustrate or describecertain modifications or adaptations which I contemplate as it isbelieved that this disclosure will enable those skilled in the art toembody or adapt my improvements as may be desired.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. A double-walled box formed of an-integral scored blank comprising abottom, outer side and end walls extending from the side and end edgesof the bottom, the outer side and end walls having inner side and endwalls joined to the top edges thereof by ,top spacer members, the innerside and end walls being shorter than the corresponding outer walls byapproximately the width of said top spacer members, the inner side wallsbeing provided with sealing flaps on their longitudinal edges secured tothe bottom, the inner end walls terminating in out-turned bottom spacermembers, the outer side walls having interlocking end flaps at the endsthereof disposed on the inner sides of the outer end walls, thediagonally opposite end flaps having spacer members on the top edgesthereof, the inner side walls having centrally disposed longitudinaltongues at the ends thereof and the side top spacer members havinglaterally projecting tongues at their ends lying in the planes of thetop spacer members on said end flaps, the inner end walls havingoutwardly disposed tongues at the ends thereof interlocking below saidinwardly projecting tongues on said side top spacer members andlongitudinally disposed tongues at the ends thereof engaged with the endedges of the inner side walls below the said longitudinally projectingtongues thereof.

2. A double-walled box formed of an integral scored blank comprising abottom, outer side and end walls extending from the side and end edgesof the bottom, the outer side and end walls having inner side and endwalls joined to the top edges thereof by top spacer members, the innerside and end walls being shorter than the corresponding outer walls byapproximately the width of said top spacer members, the inner side wallsbeing provided with sealing flaps on their longitudinal edges secured tothe bottom, the inner end walls terminating in out-turned bottom spacermembers, the outer side walls having interlocking end flaps at the endsthereof disposed on the inner sides of the outer end walls, the innerside walls having longitudinal tongues at the ends thereof and the sidetop spacer members having laterally projecting tongues at their ends,

the inner end walls having outwardly disposed tongues at the endsthereof interlocking below said inwardly projecting tongues on said topspacer members and longitudinally disposed tongues at the ends thereofengaged with the end edges of the inner side walls below the saidlongitudinally projecting tongues thereof.

3. A double-walled box formed of an integral scored blank comprising abottom, outer side and end walls extending from the side and end edgesof the bottom, the outer side and end walls having inner side and endwalls joined to the top edges thereof by top spacer members, the innerside walls being provided with securing flaps on their longitudinaledges secured to the bottom, the inner end walls terminating inout-turned bottom spacer members, the outer side walls havinginterlocking end flaps at the ends thereof disposed on the inner sidesof the outer end walls, the side top spacer members having laterallyprojecting tongues at their ends, the inner end walls having outwardlydisposed tongues at the ends thereof interlocking below said inwardlyprojecting tongues on said side top spacer members, and longitudinallydisposed tongues at the endsithereof engaged with the end edges of theinner side walls.

4. A double-walled box formed of an integral scored blank comprising abottom, outer side and end walls extending from the side and end edgesof the bottom, the outer side and end walls having inner side and endwalls joined to the top edges thereof by top spacer members, the innerside walls being provided with securing flaps on their longitudinaledges securedto the bottom, the inner end walls terminating in outturnedbottom spacer members, the outer side walls having interlocking end,flaps at the ends thereof disposed on the inner sides of the outer endwalls,'the inner side walls having longitudinal tongues at the endsthereof, the inner end walls having longitudinally disposed tongues atthe ends thereof engaged with the end edges of the inner side wallsbelow the said longitudinally projecting tongues thereof.

5. A double-walled box comprising a bottom, outer side and end wallsextending from the side and end edges of the bottom, the outer side andend walls having inner side and end walls joined to the top edgesthereof by top spacer members, the inner side walls being provided withsecuring flaps on their longitudinal edges secured to the bottom, theinner end walls terminating in outturned bottom spacer members, theouter side walls having interlocking end flaps at the ends thereofdisposed on the inner sides of the outer end walls, the side top spacermembers having laterally projecting tongues at their ends, the inner endwalls having outwardly disposed tongues at the ends thereof interlockingbelow said inwardly projecting tongues on said side top spacer membersand longitudinally disposed tongues at the ends thereof engaged with theend edges of the inner side walls.

6. A double-walled box comprising a bottom, outer side and end wallsextending from the side and end edges of the bottom, the outer side andend walls having inner side and end walls joined to the top edgesthereof by top spacer members, the inner side walls being provided withsecuring flaps on their longitudinal edges secured to the bottom, theinner end walls terminating in outturned bottom spacer members, theouter side walls having interlocking end flaps at the ends thereofdisposed on the inner sides of the outer end walls, the inner side wallshaving longitudinal tongues at the ends thereof, the inner end wallshaving longitudinally disposed tongues at the ends thereof engaged withthe end edges of the inner side walls below the said longitudinallyprojecting tongues thereof.

'7. A double-walled box comprising a bottom, outer side and end wallsextending from the side and end edges of the bottom, the outer side andend walls having inner side and end walls joined to the respective topedges thereof by spacer members, the inner end walls being of such widthas to permit them to be swung between the inner side walls to erectedposition, the bottom edges of the inner side walls being secured to thebottom, the outer side walls having interlocking end flaps at the endsthereof disposed on the inner sides of the outer end walls, the sidespacer members having laterally projecting tongues at their ends, theinner end walls having tongues at the ends thereof interlocking belowsaid tongues on said top spacer members and other tongues on their endsengaged with the end edges of the side walls.

8. A double-walled box comprising a outer side and end walls extendingfrom the side and end edges of the bottom, the outer side and end wallshaving inner side and end walls joined to the top edges thereof byspacer mem-' bers, the inner end walls being of such width as to permitthem to be swung between the inner side walls to erected position, thebottom edges of the inner side walls being secured to the bottom, theouter side walls having interlocking end flaps at theends thereofdisposed on the inner sides of the outer end flaps, the side spacermembers having laterally projecting tongues at the ends thereof, theinner end walls having outwardly disposed tongues at the ends thereofinterlocking below said tongues on said top spacer members.

9. A double-walled box comprising a bottom, outer side and end wallsextending from the side and end edges of the bottom, the outer side andend walls having inner side and end walls joined to the top edgesthereof by spacer members, the inner end walls being of such width as topermit them to be swung between the inner side walls to erectedposition, the bottom edges of the inner side walls being secured to thebottom, the outer side walls having interlocking end flaps at the endsthereof disposed on the inner sides of the outer end walls, the innerend walls having tongues at the ends thereof engaged with the end edgesof the inner side walls.

10. A double-walled box comprising a bottom,

outer side and end walls extending from the side inner sides of theouter end walls, the side spacer members having laterally projectingtongues at their ends, the inner end walls terminating in out-turnedbottom spacer members, and having tongues at the ends thereofinterlocking below said tongues on said top spacer members and bottom,

other tongues on their ends engaged with the end edges of the inner sidewalls.

11. A double-walled box comprising a bottom, outer side and end wallsextending from the side and end edges of the bottom, the outer side andend walls having inner side and end walls joined to the top edgesthereof by spacer members, the inner side walls being provided withsecuring flaps on their longitudinal edges secured to the bottom, theouter side walls having interlocking end flaps at the ends thereofdisposed on the inner sides of the outer end walls, the inner end wallsterminating in out-turned bottom spacer members, and having tongues ontheir ends engaged with the end edges of the inner side walls.

12. A double-walled box comprising a bottom, and outer side and endwallsextending from the side and end edges of the bottom, the outer sideand end walls having inner side and end walls joined to the respectivetop edges thereof and spaced therefrom in erected position of the box,

outwardly and engaging said bottom between the inner and outer endwalls, the inner end walls abutting the end edges of said flaps inerected position to resist displacement of said end walls.

13. A double-walled box comprising a bottom,

and outer side and end walls extending from the side and and edges ofthe bottom, the outer side and end walls having inner side and end wallsjoined to the respective top edges thereof and spaced therefrom inerected position of the box, the inner side walls having securing flapson their longitudinal edges secured to the bottom, the inner end wallshaving spacer members on the edges thereof adjacent the bottom, saidspacer members lying between the inner and outer end walls andmaintaining the spacing thereof, the inner end walls abutting the endedges of said flaps in erected position to resist displacement of saidend walls.

RICHARD E. SMITH.

